Install Instructions
103448-08 - 9/16 67
Figure 25B: Alternate Multiple Boiler Water Piping w/Indirect Domestic Hot Water Heater (Page 2 of 2)
VI. Water Piping and Trim E. Multiple Boiler Installation (continued)
From Previous
Page
Unions *
Safety
Relief Valve *
Drain
Valve *
Full Port
Isolation
Valve *
Purge
Valve *
From Previous
Page
* Typical on all boiler loops
Consult table for
common pipe sizing
Field-installed low water cutoff(s).
Located within designated area:
- 12" max from side of boiler to vertical run of pipe
- 14" max below top of boiler
14" MAX
12" MAX
DHW
Circulator
Swing Check
Valve
Indirect Domestic
Water Heater
(IHW)
Optional
Full Port
Isolation
Valve *
Full Port
Isolation
Valve *
Boiler
Circulator *
Swing
Check
Valve *
Y-Strainer*
(Recommended)
Optional Full Port
Isolation Valve *
Tee and Plug *
(Recommended for future
Heat Exchanger service)
CAUTION
It is the installers responsibility to select pumps
and boiler piping congurations that provide the
proper ow rates and performance for the boiler
and indirect water heater.
Refer to Table 16 for recommended Boiler Loop
Circulator.